Auto merge of #4478 - tsurai:master, r=flip1995

[rust.git] / tests / ui / collapsible_if.rs

diff --git a/tests/ui/collapsible_if.rs b/tests/ui/collapsible_if.rs
index 6828743abf37c629065a13cde5ee05665239c951..7b322acae263d75eed3482dd120150677faf7b47 100644 (file)
--- a/tests/ui/collapsible_if.rs
+++ b/tests/ui/collapsible_if.rs
@@ -1,11 +1,5 @@
-// Copyright 2014-2018 The Rust Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
+// run-rustfix
+#![allow(clippy::cognitive_complexity, clippy::assertions_on_constants)]
 
 #[rustfmt::skip]
 #[warn(clippy::collapsible_if)]
@@ -206,4 +200,25 @@ fn main() {
             println!("Hello world!");
         }
     }
+
+    // Test behavior wrt. `let_chains`.
+    // None of the cases below should be collapsed.
+    fn truth() -> bool { true }
+
+    // Prefix:
+    if let 0 = 1 {
+        if truth() {}
+    }
+
+    // Suffix:
+    if truth() {
+        if let 0 = 1 {}
+    }
+
+    // Midfix:
+    if truth() {
+        if let 0 = 1 {
+            if truth() {}
+        }
+    }
 }